Combined shutter-worker and blind-slat operator



il ITE D STATES PATENT OFFICE.

BELA G. MERRILL, OF GENEVA, WISCONSIN.

SPECIFICATION forming part of Letters Patent No. 259,191, dated June 6, 1882.

Application filed April 7, 1882. (Model) To all whom it may concern:

Be it known that I, BELA G. MERRILL, of Geneva, in the county of Walworth and State of Wisconsin, have invented a new and Improved Window-Blind Operator, of which the following is a full, clear, and exact description.

The object of my invention is to provide means for opening and closing the blinds and opening and closing the slats of the same from the inside by one and the same device; and to this end the invention consists in a novel construction and arrangement of parts, as hereinafter fully-described.

Reference is to be had to the accompanying drawings, forming part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure 1 is an elevation of the'window-jamb and a window-blind, the jamb being seen in the plane of the wall of the house, and also being sectioned in part and the window-blinds being half-way open or at right angles to the wall. Fig. 2 is an elevation of theexterior portion of the apparatus and of the outside of the closed blind. Fig. 3 is a plan of the segmental wheel for operating the blinds.

A represents the window-jamb, with a shaft, B, extending through it from inside to outside, said shaft having a crank, O, toothed stopdisk D, and latch E inside of the jamb, and also having a spur-pinion, F, and a bevel-pinion, Gr, outside.

In practice these two pinions will be cast or otherwise constructed together in one device.

H represents a pintle attached to the exterior of the window-jamb by a bracket, I, said pintle being in the axis of the blind-hinges K, and also in line with shaft B. From a point a little higher than the top of pinion F this pintle is curved to the radius of the pivot L onthe middle cross-bar, M, of the blind, the said curvature being with relation to the position of said pivot when said blind is closed. Along this curved part of the pintle said pintle has a rib or feather, N.

O is a segment of a toothed wheel, mounted on the pintle so as to revolve on it just below its curved portion, and under the lower end of the feather N said wheel has a notch, P, which allows it to rise up on the curved portion of the pintle when the notch coincides with the feather. Segmental wheel 0 has a toothed arc, Q, depending from a point a little beyond one of the ends of its toothed rim, said are being also formed on the lever-arm R, having its pivot at L, and the location of this are Qis such that when the blind swings shut said are will gear or mesh with pinion F. The pivot L extends through the blind-rail M, and carries an arm, S, that connects with the blind-slat opener and closer T. It will be seen that by turning the crank U so as to close the blind, and continuing the motion of the crank afterward, arc Q will be raised by pinion F, so as to pull down rod T and open the slats, the said are at the same time lifting segmental wheel 0 out of gear with bevel-pinion G to allow the shaft B to be so turned. Then by turning the shaft the other way the blind-slats will be closedv and. segmental wheel 0 will descend into gear with pinion G again, ready for opening the blind. When the segmental wheel 0 is thus lifted out of gear'with the pinion G the feather N and notch Pin wheel 0 prevent the wind from blowing the blind open.

The latch E and toothed disk D on the crank are for locking the blind open or'shut. The disk being stationary, the latch is arranged in a little groove in the side of the crank near the disk, (not shown,) in which it is confined between the crank and the disk, and in which said latch is made to work with sufficient friction to hold it either in or out of gear with the disk.

I prefer to have the slat-operators T connected to the upper slat-rod, V, by a pin and a slot, W, so that lever S will close the lower slats entirely and only partially close the upper ones, and then will partly open the lower ones, by being turned back a little, without opening the upper ones, whereby the lower slats may be wholly closed or partly closed, together with the upper ones partly closed.

, X represents the frame of the blind, and Y the slats Having thus fully described my inventidn, I claim as new and desire to secure Letters Patent- 1. The combination of the segmental wheel 0, curved pintle H, toothed arc Q, slat-openin g lever R S, and slat-operator T with the blind I 3. The curved pintle H, having feather N, and blind opening and closing crank O, shaft in combination with segmental Wheel 0, hav- B, and pinions F G, substantially as specified. ing notch I, and connected to slat-operating 2. The combination, with the shaft 13, procrank by toothed are Q, substantially as speci- 15 5 vided with the pinions F G, and the curved fied.

pintle H, of the sliding segmental wheel 0, provided with the toothed arc Q, and the BELA MERRILL means, substantially herein shown and de- \Vitnesses: scribed, for connecting the said wheel to the ELVV. FROST, 1o blind and slats, as and for the purpose set JOHN B. SIMMONS.

forth. 

